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Finding the Fourth Proportional to 58,328.84, 87,494.60 and 20,891.48

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Solution

The fourth proportional to 58,328.84, 87,494.60 and 20,891.48 is: 31,337.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,328.84 : 87,494.60 = 20,891.48 : x
  2. Step 2: Convert to fraction form
    58,328.84/87,494.60 = 20,891.48/x
  3. Step 3: Cross multiply
    58,328.84x = 87,494.60 × 20,891.48
  4. Step 4: Simplify right side
    58,328.84x = 1,827,891,686.01
  5. Step 5: Solve for x
    x = 1,827,891,686.01/58,328.84
  6. Step 6: Final answer
    x = 31,337.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.